Add release notes.

bake.rb

@@ -20,3 +20,11 @@ def clean
 		system("make clean")
 	end
 end
+
+# Update the project documentation with the new version number.
+#
+# @parameter version [String] The new version number.
+def after_gem_release_version_increment(version)
+	context["releases:update"].call(version)
+	context["utopia:project:readme:update"].call
+end

gems.rb

@@ -10,6 +10,7 @@
 group :maintenance, optional: true do
 	gem "bake-gem"
 	gem "bake-modernize"
+	gem "bake-releases"
 
 	gem "utopia-project"
 end

readme.md

@@ -12,6 +12,8 @@ The initial proof-of-concept [Async](https://github.com/socketry/async) was buil
 
 Please see the [project documentation](https://socketry.github.io/io-event/).
 
+## Releases
+
 ## Contributing
 
 We welcome contributions to this project.